So, for me, it's a tie between Adventure Express and FoF. I had originally voted for Adventure Express because of its theming in the tunnels, but I changed my vote to Flight of Fear because I feel like FoF's theme is more consistent throughout and extends for a longer period of time (AE's individually themed tunnels vs. FoF's long themed line + the station), plus, it does have more of a themed line than AE does. 13 days!